Federal Taxes You own generated by Turbotax is not correct

Hi,

 

I recently used TurboTax Deluxe to prepare my tax. Now I am in Federal Review page:

WX20210321-174852.png

However, the "Federal Taxes you Own" number is not correct based on my calculation with the rate specified in this link.

My case is married joint filing. I used the number in "Your Taxable Income" and find the corresponding bucket in this link and based on that calculated the "Federal Taxes You own". But the number I calculated is around $4K less than the number Turbotax calculated. I wonder whether this link provided wrong calculation or I miss anything or the turbotax has some bug?

 

Thanks a lot for any help!